Performance wise (and I'll just do the NFC)?
The guy this year that I really think is underrated and gets a snub is Nathan Vasher. He really stepped it up at was a shutdown corner this year. I would give Ronde Barber the nod ahead of DeAngelo Hall as well. Dre' Bly and DeLo are about on the same field right now but I think Bly has an edge due to experience. Then there is Darren Sharper who has been an elite corner for years now. This year was no exception.
You could take any combination of Vasher, Barber, Bly, Sharper, and Hall for the Pro Bowl. I'd mention Gamble but I think he's an assflake. But you can't deny how well he has performed since coming into the NFL.
Dre Bly has a broken hand so he would probably not even play if he got voted in, plus Hall has been money in nationally televised games. Vasher got voted in, Barber is not as good as Hall he is just in a better team where they have a consistent pass rush & much less is asked of him week in & week out but he made it too, Darren Sharper
is a Safety
dude, and Gamble hasn't played better than Hall. Galloway did a hell of a lot more against him than he did against Hall. I like you dirty but you don't know what you're talking about on this one.
Pudge, ever notice the great corners usually play on a team with a great pass rush, a la Vasher? It's no surprise to the informed the he made the Pro Bowl considering the pass rush support he has. I have been a corner guy for a very long time and the "best" corners always come from teams with top flight pass rushes. Deltha O'Neal is a perfect example of this. In Denver, where the pass rush was not that great a few years ago, he was not thought highly of. He goes to the Benglas & starts lighting up the league when Lewis starts putting that D together. Notice how Champ had an off year last year & now that the Broncos picked up all those D-linemen he is the elite corner in the league again? That's how it works for corners. As Deion Sanders said, "nobody can cover an NFL WR for 5+ seconds, they're just too good".